Watts 4 LFM113FP Lead-Free RPZ Backflow Preventer, Ductile Iron, Flanged

The Watts 4 LFM113FP is a 4" lead-free globe-pattern reduced pressure zone (RPZ) backflow preventer with Flanged connections. It features a ductile iron body. Rated to 250 psi. This model is certified lead-free for potable-water installations.

This 4 inch flood protection valve prevents catastrophic property damage due to relief valve discharge and/or a blocked or overwhelmed floor drain during normal relief valve operation. It detects continuous and potential water discharge from the reduced pressure zone backflow preventer and shuts down the valve in case of an abnormality. It wirelessly alerts the user via text message, phone call or email.

Features

• Class 150 flanged
• 250 psig rated
• Wireless alert capability
• 20-200 psig

Common Questions

What is the maximum working pressure?

This unit is built as 150# Flanged and is rated to 250 psi. End connection sets the ceiling on this platform, and 150# and 300# bodies are not interchangeable — confirm the class matches your flange drilling before ordering.

Is this valve certified lead-free for potable water?

Yes. The "LF" prefix denotes Watts lead-free construction, compliant with the weighted-average 0.25% lead requirement of the Safe Drinking Water Act (NSF/ANSI 372) for potable-water service.

Specifications

• Type: RPZ
• Size: 4"
• Inlet Size: 4"
• Outlet Size: 4"
• Connection: Flanged
• Body Material: Ductile Iron
• Pressure Class: Class 150
• Max Pressure (psi): 250
• Operation: Continuous
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: 4 LFM113FP
• Lead-Free: Yes
• Item Type: Valve
• Control Function: Backflow Prevention (RPZ)
• Valve Platform: Mustang (M-Series)
• Body Pattern: Globe
• End Connection / Pressure Class: 150# Flanged
• Coating: Fusion-Bonded Epoxy